I only know what I've read at Tire Rack, but the reviews are pretty positive. In fact, once my Cross Terrains wear out, I am moving up to 265/70/17 and will get either the Silent Armors or the Dueler Alenza. Tire Rack's experts tested the Alenzas and rated them better than the Cross Terrains for both noise and comfort, if memory serves me.
I figure I've got about another six months before they need to be replaced, so many more reviews of both tires will be posted.